WitMotion WT1-IMU Dual-Axis Angle Sensor (Accelerometer + Inclinometer), 3.35V TTL, 0.5 Accuracy, 20 Hz Output

Description

Overview

WitMotion WT1-IMU is a super cost-effective dual-axis angle sensor that fuses accelerometer/gyroscope/magnetometer data with a Kalman-filter-based algorithm to output X/Y angle in real time. The module runs from 3.35 V, communicates over TTL serial, and is built on a compact gold-plated stamp-hole PCB for easy SMT integration. Typical angle accuracy is 0.5 (X & Y) with a 20 Hz default return rate. Official PC software provides dashboards, calibration, logging, and export; SDK/examples support MATLAB, Python, Raspberry Pi, STM32, ROS, Arduino, and C/C#.

Key Features

• Dual-axis angle output (X, Y) for attitude/tilt measurement

• Kalman filter + WitMotion fusion algorithm for high stability

• Supply: 3.35 V, TTL UART; LDO embedded

• Accuracy: 0.5 (X & Y)

• Angle range: X 180, Y 90

• Default return rate: 20 Hz (configurable in software)

• Current consumption: typ. ~5 mA, <10 mA

• Compact 15.24 15.24 mm module; gold-plated stamp holes

• Free PC software: dashboard, calibration, bandwidth/baud settings, data recording & playback, export to TXT/BIN/PLAY/XLS

• Accessories/fixtures: optional USB-to-TTL adapter and test-burning fixture for easy bring-up

Specifications

Item	Value
Model	WT1-IMU
Voltage	3.35 V
Interface	TTL UART
Output content	2-axis angle (X, Y)
Angle range	X: 180Y: 90
Angular accuracy	X/Y: 0.5
Default return rate	20 Hz
Baud rate	9600 (20 Hz output by default)
Current	typ. 5 mA; <10 mA

Dimensions & Axes

Size (mm)	Value
A	15.24
B	15.24
C	2.54
D	12.7
E (height)	2

Axis definition: X to the right, Y upward, Z outward from the board; rotation follows the right-hand rule.

Pinout (12-pin stamp-hole)

No.	Pin	Function
1	D0	NC (reserved)
2	VCC	3.35 V input
3	RX	Serial data input (TTL)
4	TX	Serial data output (TTL)
5	GND	Ground
6	SWIM	SWIM data interface
7	D3	NC (reserved)
8	GND	Ground
9	SDA	NC (reserved)
10	SCL	NC (reserved)
11	VCC	3.35 V input
12	D2	NC (reserved)

MCU connection: TTL serial; cross-connect TXRX (MCU-TX WT1-IMU RX, MCU-RX WT1-IMU TX), VCC and GND common.

Software & Development

• Dashboard: live view of angle, acceleration, angular velocity, magnetic field, quaternion, etc.

• Config Menu: acceleration & magnetic calibration, placement direction, output frequency/bandwidth, baud-rate, sleep mode.

• Recording/Export: quickly log and export to TXT/BIN/PLAY or paste into Excel (XLS).

• Tooling: examples/SDKs for MATLAB, Python, Raspberry Pi, STM32, ROS, Arduino, C/C#.

• Optional test-burning fixture for plug-and-play flashing/bring-up.

Typical Applications

Head-mounted display, movement tracking, robotics, AGV/UGV, unmanned driving, mining/tower/industrial attitude monitoring, automation equipment, manned aircraft R&D, safety monitoring, and smart/automated farms.

Details

Dual-axis angle sensor, cost-effective, stable, with Kalman filter algorithm, ISO9001 certified.

WT1-IMU accelerometer operates at 3.3-5V, <10mA current, TTL interface. Outputs 2-axis angles (X: 180, Y: 90) with 0.5 accuracy. Default return rate 20Hz, baud rate 9600.

WitMotion modules provide high volume, accuracy, and cost-effectiveness with rugged design, multiple configurations, and easy development. They include 650W sales, 0.5 inclination, Kalman filter, closed-loop technology, and configurable software. Other modules offer lower performance, fewer features, and higher risk.

WitMotion Algorithm x Kalman Filter. Collects raw data from gyroscope, accelerometer, magnetometer. Calculates angle using Kalman filtering and WitMotion algorithms. Accuracy: X&Y 0.5.

Interface: 3.3~5V, TTL, LDO embedded. Compact & easy to install with high-density 4-layer board and gold-plated stamp holes. Adaptive range switching for beginners. Development kits include software, manual, protocol, SDK, and sample codes.

Free & genuinely useful software offers user-friendly design for easy setup and data retrieval. Real-time motion tracking with rock-solid data measurement displays acceleration changes in X, Y, Z axes via dynamic curves.

Dashboard displays real-time sensor data including acceleration, angular velocity, angle, magnetic field, pressure, and quaternion. Config menu allows calibration, installation direction, baud rate, and bandwidth settings. Matlab analysis enables multi-dimensional data visualization.

Powerful data storage and export to TXT, BIN, or Play files; compatible with MATLAB, Python, Raspberry Pi, STM32, ROS, Arduino, C++/C#. Includes datasheet, manual, software, and driver for easy integration.

WitMotion WT1-IMU supports PC connection via TTL serial port with cross-connected TX and RX. Compatible with multiple devices. Test burning fixture sold separately, plug and play for easy setup without soldering.

WitMotion WT1-IMU dual-axis angle sensor offers TTL serial connection, 12-pin layout, compact 15.2415.242.54 mm size, right-hand rule axes, and includes VCC, GND, TX, RX, SWIM, SDA, SCL pins.

IMU sensor applications: mining, farming, robotics, towers, automation, drones, tracking, monitoring.